Physics, 19.07.2019 04:30 abbygriffin2693
Why does it matter? heat & changes in temperature wrap-up question 1: electrical power in southern california costs about 18 cents per kwh. if you have to heat up 1 l of water to cook some pasta, how much does it cost you to bring the water from 22 c up to 100 c? (useful conversions: 1 ml -1g of water, and 1 kwh-3,600,000 j) how would the cost compare to the same temperature change of the same mass of oil instead? wrap-up question 2: how does the thermal conductivity of human skin compare to that of metal? use your results from part 3 and ideas from part 4 to justify your answer student wrap-up worksheet | page1 lab #9 question 3: why would it be more expensive to heat or cool a building made with is of glass compared to one built of drywall? use thermal conductivity to justify your answer
Answers: 3
Physics, 21.06.2019 22:10
Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley
Answers: 3
Physics, 22.06.2019 04:00
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
Answers: 2
Physics, 22.06.2019 12:10
Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
Why does it matter? heat & changes in temperature wrap-up question 1: electrical power in sou...
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